Possibilities of applying biosorption systems for ballast water treatment

Abstract

This article represents applying of biosorption process for the treatment of wastewater,contaminated with light oil products, SC "Klaipedos nafta", which works in the field oftransshipment of oil and its products in Lithuania, has installed biosorbers for the treatmentof ballast and bilge water from the vessels, Biosorption process is sustained by integratedrunning of the Granulated Activated Carbon (GAC) and the active branches of particularmicroorganisms, This wastewater treatment method is preeminent for treatment of this kindof wastewater, comparing with the treatment efficiency of other methods, Wastewater ispumped into biosorbers after flotation and remaining concentration of Total PetroleumHydrocarbons (TPH) varies about 2 mg/L At the very beginning of the biosorbers operationwastewater treatment efficiency of 0.2 mg/I was reached, For the process control mainparameters are being analyzed: sorption capacity of the activated carbon, biomass amountand enzymatic activity of the microorganisms. Interdependence of the values of theseparameters and treatment efficiency according to TPH is being established, Obtained resultssupport the theory of biosorption process and the process workability for the treatment ofwastewater, polluted with light oil products, In this article there are given principletechnological solutions and parameters of the biosorbers in SC "Klaipedos nafta",